Week 4 Project - STAT 3001
A completed Week 4 project for STAT 3001, covering key statistical analysis techniques.
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Week 4 Project - STAT 3001
Student Name: <Angela Johnson>
Date: <March 25, 2015.>
Instructions: To complete this project, you will need the following materials:
STATDISK User Manual (found in the classroom in DocSharing)
Access to the Internet to download the STATDISK program.
Part I. Analyze Data
Instructions Answers
1. Open the file COTININE
using menu option Datasets
and then Elementary Stats,
9th Edition. This file
contains some information
about a exposure to second-
hand smoke. How many
observations are there in this
file?
There are 3 columns of data each containing 40 observations so in total there
are 120 observations.
In this file, there are three variables, labeled Smokers, ETS, and No ETS. The dataset was collected
for a study of second-hand smoke. The sample data consists of the measured serum cotinine levels in
three different groups of people.
The NOETS group lists the cotinine levels for subjects who are nonsmokers and have no exposure
to environmental tobacco smoke at home or work.
The ETS group lists cotinine levels for subjects who are nonsmokers exposed to tobacco smoke at
home or work.
The SMOKERS group lists cotinine levels for subjects who report tobacco use.
Serum cotinine is a metabolite of nicotine, meaning that cotinine is produced when nicotine is absorbed by
the body. Higher levels of cotinine correspond to higher levels of exposure to smoke that contains
nicotine.
2. What results do you expect
to find in this data?
We would expect the smoker group to have the highest levels of cotinine levels
followed by ETS and NOETS group
Part II. Descriptive Statistics
3-6Generate descriptive
statistics for all three groups
of people and complete the
Variable Sample
Mean
Sample
Standard
Deviation
Sample Size
Smokers 172.48 119.50 40
Week 4 Project - STAT 3001
Student Name: <Angela Johnson>
Date: <March 25, 2015.>
Instructions: To complete this project, you will need the following materials:
STATDISK User Manual (found in the classroom in DocSharing)
Access to the Internet to download the STATDISK program.
Part I. Analyze Data
Instructions Answers
1. Open the file COTININE
using menu option Datasets
and then Elementary Stats,
9th Edition. This file
contains some information
about a exposure to second-
hand smoke. How many
observations are there in this
file?
There are 3 columns of data each containing 40 observations so in total there
are 120 observations.
In this file, there are three variables, labeled Smokers, ETS, and No ETS. The dataset was collected
for a study of second-hand smoke. The sample data consists of the measured serum cotinine levels in
three different groups of people.
The NOETS group lists the cotinine levels for subjects who are nonsmokers and have no exposure
to environmental tobacco smoke at home or work.
The ETS group lists cotinine levels for subjects who are nonsmokers exposed to tobacco smoke at
home or work.
The SMOKERS group lists cotinine levels for subjects who report tobacco use.
Serum cotinine is a metabolite of nicotine, meaning that cotinine is produced when nicotine is absorbed by
the body. Higher levels of cotinine correspond to higher levels of exposure to smoke that contains
nicotine.
2. What results do you expect
to find in this data?
We would expect the smoker group to have the highest levels of cotinine levels
followed by ETS and NOETS group
Part II. Descriptive Statistics
3-6Generate descriptive
statistics for all three groups
of people and complete the
Variable Sample
Mean
Sample
Standard
Deviation
Sample Size
Smokers 172.48 119.50 40
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Document Details
University
Walden University
Subject
Statistics